[Refactor] Add some metafiles

[liqikai9]

Motivation

Add some metafiles to support mmdeploy and installation verification.

Modification

Add 3 metafiles to collect model information: hrnet + coco, litehrnet + coco, mspn+coco.

BC-breaking (Optional)

Use cases (Optional)

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit tests to ensure correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• CLA has been signed and all committers have signed the CLA in this PR.

[codecov]

Codecov Report

Base: 78.17% // Head: 78.19% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (433d475) compared to base (08f46c0).
Patch has no changes to coverable lines.

❗ Current head 433d475 differs from pull request most recent head c05e4a5. Consider uploading reports for the commit c05e4a5 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           dev-1.x    #1664      +/-   ##
===========================================
+ Coverage    78.17%   78.19%   +0.01%     
===========================================
  Files          178      178              
  Lines        10331    10331              
  Branches      1795     1795              
===========================================
+ Hits          8076     8078       +2     
+ Misses        1930     1928       -2     
  Partials       325      325              

Flag	Coverage Δ
unittests	78.19% <ø> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmpose/datasets/transforms/common_transforms.py	83.19% <0.00%> (+0.56%)	⬆️

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